had this message pop up a few weeks ago, pressing OK wouldnt clear it. When I got home ( was driving in C london) i topped up the coolant to the max mark

yesterday started the car, same warning.Checked under the bonnet and the coolant was at the right mark ( near max)

pressed OK and the message went away and hasnt re appeared

Any ideas ?

Check the sensor in the water bottle it may had come loose.

Richard FL2 07 TD4 GS Auto
Ex 02 TD4 Auto

do you know what it looks like ? if its loose how do I re attach ?

Sorry not sure I had a similar fault and that was what LR suggested but after I topped it up it has not happened again (yet) but was told it's in the plastic bottle , so I assume it must just clip in the bottom.

Richard FL2 07 TD4 GS Auto
Ex 02 TD4 Auto